Parallel Control; J2: Parallel Interface Pins - Texas Instruments DAC8728EVM User Manual

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Parallel Control

Samtec part numbers SSW-110-22-S-D-VS and TSM-110-01-T-DV provide a convenient, 10-pin, dual-row
header/socket combination at J1. This header/socket provides access to the digital control pins of the
EVM. Consult Samtec at
connector options.
Table 2 describes the parallel interface pins.
Pin Number
J2.1
J2.3
J2.5
J2.7
J2.9
J2.11
J2.13
J2.15
J2.17
J2.19
SBAU161 – February 2010
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Table 2. J2: Parallel Interface Pins
Signal
CE
WE
RE
EVM_A0
EVM_A1
EVM_A2
EVM_A3
Unused
Unused
INT
Copyright © 2010, Texas Instruments Incorporated
Description
DSP Chip Enable Strobe: Signal is driven
low by the DSP each time a parallel bus
write or read occurs and is driven high once
it completes
DSP Write Strobe: Signal is cycled low to
high within the CE strobe when a parallel
bus write occurs
DSP Read Strobe: Signal is cycled low to
high within the CE strobe when a parallel
bus read occurs
DSP Address line 0: Used in conjunction
with U8 to control LATCH, R/W, CLR and
RST signals
DSP Address line 1: Used in conjunction
with U8 to control LATCH, R/W, CLR and
RST signals
DSP Address line 2: Used in conjunction
with U8 to control DC_CS and LDAC
DSP Address line 3: Used in conjunction
with U8 to control DC_CS and LDAC
—
—
DSP Interrupt Input: Connects to BUSY
output of the DAC8728
Parallel Control
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DAC8728EVM